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3 years ago

Which statement describes a ratio?

Mathematics

2 answers:

Mnenie [13.5K]3 years ago

5 0

Answer:

C. For every 2 red candies in a bag, there are 3 green candies.

Step-by-step explanation:

A ratio always contains 2 figures.

mash [69]3 years ago

5 0

Answer:

Step-by-step explanation:

I'm not sure, but I think it's C. good luck :)

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At Jaxlyn’s Garage, 200 cars were inspected and worked on. There were 92 cars that

Ira Lisetskai [31]

Answer:

A) 0.26

B) 0.42

Step-by-step explanation:

No. of cars which needed both:

92 + 136 - (200 - 24)

P(both) = 52/200 = 0.26

No. of cars that need an alternator, but not new brakes:

136 - 52

P = 84/200 = 0.42

6 0

3 years ago

X^2+6X=16 is a quadratic equation what are the solutions?

IgorC [24]

The answer is 2,-8.
But I am not sure. Hope this will help you!

4 0

4 years ago

Read 2 more answers

The diameter of a circle has endpoints P(-12, -4) and Q(6, 12).

nexus9112 [7]

9514 1404 393

Answer:

(x +3)² +(y -4)² = 145

Step-by-step explanation:

The center of the circle is the midpoint of the given segment PQ. If we call that point A, then ...

A = (P +Q)/2

A = ((-12, -4) +(6, 12))/2 = (-12+6, -4+12)/2 = (-6, 8)/2

A = (-3, 4)

The equation of the circle for some radius r is ...

(x -(-3))² +(y -4)² = r² . . . . . . where (-3, 4) is the center of the circle

The value of r² can be found by substituting either of the points on the circle. If we use Q, then we have ...

(6 +3)² +(12 -4)² = r² = 9² +8²

r² = 81 +64 = 145

Then the equation of the circle is ...

(x +3)² +(y -4)² = 145

3 0

3 years ago

AB = 44 + 3xBC = 33 + yCD = 64 − xAD = 48 − 2yQuadrilateral ABCD is a parallelogram if both pairs of opposite sides are congruen

Otrada [13]

The lengths (in centimeters) of the opposite side pairs are 59 cm , 38 cm. Option C) is the correct answer.

Step-by-step explanation:

step 1 :

Given that,

Quadrilateral ABCD is a parallelogram if both pairs of opposite sides are congruent.

step 2 :

The opposite sides are AB and CD respectively.

The another opposite sides are BC and AD respectively.

step 3 :

If both pairs of opposite sides are congruent, then

AB = CD

44+3x = 64-x

3x+x = 64-44

4x = 20

x = 5

step 4 :

BC = AD

33+y = 48-2y

y+2y = 48-33

3y = 15

y = 5

step 5 :

Subsitute x=5 and y=5 in any of the given sides,

CD = 64-x = 64-5 = 59

∴ CD = 59 cm

BC = 33+y = 33+5 = 38

∴ BC = 38 cm

The lengths of the opposite side pairs are 59 cm , 38 cm.

3 0

3 years ago

If the acceleration of an object is given by dv/dt = −2v, Find the position function s(t) if v(0) = 7 and s(0) = 0.

kirill [66]

Answer:

Step-by-step explanation:

Given that acceleration of an object is

$\frac{dv}{dt} =-2v\\\frac{dv}{v} =-2dt\\ln v = -2t+C\\$

is the solution to the differential equation

Since v(0) =7

we get ln 7 = C

Hence $lnv = -2t+ln 7\\v=7e^{-2t}$

since velocity is rate of change of distance s we have

$v=\frac{ds}{dt} =7e^{-2t}\\s= [tex]s(t) =\frac{-7}{2} (e^{-2t})+C)[$

substitute t=0 and s=0

$C=7/2$

So solution for distance is

$s(t) =\frac{-7}{2} (e^{-2t}-1)$

4 0

3 years ago